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Anthropoid Origins pp 413–462Cite as

Function and Fusion of the Mandibular Symphysis in Mammals: A Comparative and Experimental Perspective

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Part of the book series: Developments in Primatology: Progress and Prospects ((DIPR))

Abstract

Understanding the functional underpinnings of interspecific and ontogenetic variation in a given character, as well as in a character complex, is vital for unraveling the adaptive significance of major morphological transformations during the evolution of a higher-level clade. One feature long recognized as distinguishing basal anthropoids from their “prosimian” ancestors is the evolution of a fully fused or ossified mandibular Symphysis (e.g., Fleagle, 1999; Martin, 1990; Szalay and Delson, 1979). Due to major fossil discoveries over the past 15 years (Beard et al., 1994, 1996; Jaeger et al., 1999; Simons, 1989, 1992, 1995; Simons et al., 2001) as well as recent experimental and comparative analyses of important functional relationships (e.g., Hylander et al., 1987, 1998, 2000, 2003a; Ravosa, 1991a, 1999; Ravosa et al., 2000a), our understanding of evolutionary changes in masticatory form among living and fossil anthropoids is greatly improved.

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Authors and Affiliations

  1. Field Museum of Natural History and Department of Cell and Molecular Biology, Northwestern University Feinberg School of Medicine, Chicago, IL, 60611-3008, USA

    Matthew J. Ravosa

  2. Northwestern University Feinberg School of Medicine, Chicago, IL, 60611-3008, USA

    Aaron S. Hogue

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  1. Matthew J. Ravosa
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  1. Department of Anatomical Sciences, Stony Brook University, Stony Brook, New York, USA

    Callum F. Ross

  2. Biological Anthropology and Anatomy, Duke University Medical Center, Durham, North Carolina, USA

    Richard F. Kay

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Ravosa, M.J., Hogue, A.S. (2004). Function and Fusion of the Mandibular Symphysis in Mammals: A Comparative and Experimental Perspective. In: Ross, C.F., Kay, R.F. (eds) Anthropoid Origins. Developments in Primatology: Progress and Prospects. Springer, Boston, MA. https://doi.org/10.1007/978-1-4419-8873-7_17

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